Battery charger protection circuit diagramtrabajos

...instance. Database: Design and implementation of a MySQL database to store: Previous conversations. Compressed files and images. Information configured by the client. Robust integration with the AI and the application. Public and open source libraries: The entire project must be based on publicly accessible tools to facilitate future maintenance. --- 4. Security Protection of sensitive data: Use of encryption for data storage and transfer. Implementation of advanced security measures on the web and mobile app. Confidentiality: Confidentiality agreement on all sensitive information handled during the project. --- Developer requirements Necessary technical knowledge: Programming languages: Python (AI, APIs and data processin...

Se pretende realizar un proy...considered to be highly loyal and receive additional benefits. Determine the equivalent Boolean function of a truth table. To show the results, it is necessary to design a circuit that shows the information of the total percentage obtained from all possible combinations. Use the truth table and determine the equivalent Boolean function. That is, if they are a client of the product, it takes the value 1, if they are not, the value 0 is assigned. According to this result, add the percentages: ● Clothing 15%. ● Furniture 20%. ● Afore 25% ● Bank 25% ● Digital 15%. To show the results, it is necessary to design a circuit that shows the information of the total percentage obtained from all possible combinations. **The truth table is already avai...

...forces me to pay for several Internet and to have a computer, even if it is an Orange Pi Zero 3 that costs less than 30 euros for each car. Being able to use Janus Gateway to manage all the video and audio streaming of all the Raspberrys in all the small cars would be a better, more elegant, cheaper (in the long run) and better performing solution. The Raspberrys are connected to an intermediate circuit to control motors and servomotors through the GPIO port. Each one controls 4 motors and 2 servomotors. I am sold some kits to assemble the small cars, although you have to buy the Raspberry, the USB microphone and the batteries separately. The manufacturer of the Kits provides me with some classes programmed in Python to manage motors and servomotors. I have created a Python ap...

... What we offer you: Learn how to connect with them for your evolution and spiritual growth. Who are the archangels and how can we invoke their powerful support using specific light symbols Temple treatment techniques and angelic energy, including attunement with light symbols. I will explain how we can apply these teachings in self-healing and in the connection and liberation of others. Self-protection and development of a complete session and the evolution in consciousness with the angelic world. I invite you to participate and encourage yourself to be part of this beautiful system of liberation and evolution to be a teacher and channel for others, and in this way activate the angelic chakra in you, nourish yourself with knowledge to cleanse the space and cleanse the aura with t...

...forces me to pay for several Internet and to have a computer, even if it is an Orange Pi Zero 3 that costs less than 30 euros for each car. Being able to use Janus Gateway to manage all the video and audio streaming of all the Raspberrys in all the small cars would be a better, more elegant, cheaper (in the long run) and better performing solution. The Raspberrys are connected to an intermediate circuit to control motors and servomotors through the GPIO port. Each one controls 4 motors and 2 servomotors. I am sold some kits to assemble the small cars, although you have to buy the Raspberry, the USB microphone and the batteries separately. The manufacturer of the Kits provides me with some classes programmed in Python to manage motors and servomotors. I have created a Python ap...

Necesito una aplicación móvil android que a través de bluetooth detecte, lea y almacene con una estampa de fecha/hora los identificadores de beacons bluetooth (iBeacon/Eddystone) y cuando tenga señal WiFi envíe estos registros a un gateway MQTT tipo Mosquitto. Envía los datos de Fecha-Hora-BeaconID-Battery-ReaderID

...de Microsoft 365. Implementación de mejoras para elevar el Secure Score, optimizando la seguridad sin comprometer la funcionalidad. Recomendaciones personalizadas para cumplir con los estándares de seguridad. Implementación de Soluciones de Ciberseguridad: Configuración avanzada de políticas de seguridad, incluyendo DLP (Data Loss Prevention), ATP (Advanced Threat Protection), y más. Integración de Microsoft Defender para Office 365. Configuración y optimización de alertas y reportes de seguridad. Consultoría Continua: Asesoramiento continuo para mantener y mejorar la seguridad de su entorno Microsoft 365. Capacitación para su equipo en la...

...System: - Implement a system so advertisers can send paid ads in groups. - Set up a payment method for posting ads. 8. Metrics and Analytics: - Include analytics tools to measure the impact of paid posts (gross views) and group growth (since bot joined) 9. Personalization and Targeting: - Allow user targeting to target specific ads to specific category groups or demographics. 10. Spam and Abuse Protection: - Implement measures to prevent spam and bot abuse in groups. 11. Wallet and Finances - User Balance - Invite Referral System - Reward Program for Group Admins. - Reward for Fremium users: * They will be able to use the bot with some boost features for free in exchange for allowing advertising in their groups, eligible groups between 0 and 5000 members. *Eligible groups wit...

Buenos días se solicita una prueba de concepto de una web que se pueda configurar la key del Data Protection, el cual firma o encripta las sesiones y los tokens antiforeign. Cuando se crea con AddDistributedMemoryCache() al momento de escalar o crear réplicas de la web, cada instancia tiene su propia Data Protection y cuando un request va a una instancia, pero fue creada por la otra no lo puede desencriptar o usar. Para mayor documentación puede revisar esta página A tener en consideración: - El proyecto debe ser en asp net core 3.1 tener en cuenta que se desplegara en Linux no IIS, se recomienda usar Docker y las imágenes de alpine o debian. - Se dara como finalizado la prueba

Quiero realizar un plano eléctrico del circuito de control y potencia de un cuadro eléctrico para el arranque de motores.

As part of this project, I need assistance in performing the following tasks: - Writing VHDL code - Designing FPGA circuits, specifically for Xilinx FPGA The goal is to achieve PWM via VHDL and PS to PL UART communication in the FPGA circuit design. It would be advantageous if you have a strong background in VHDL, FPGA circuit design and specific experience with Xilinx FPGA. Additionally, understanding of PWM and UART communication would be beneficial. Estoy buscando un ingeniero FPGAs y firmware para q haga un pequeño proyecto para hacerlo correr en una tarjeta de desarrollo Pynq-Z2 con el Sw Vivado. Se trata de implementar un PWM de valor de entrada variable, esto en VHDL para cargarlo en la PL de la Zynq. Se trataría de lo siguiente; a través de...

Mi proyecto está basado en la implementación de un sistema web basado en microservicios , para mejorar la gestión de recursos IP en une empresa de Telecomunicaciones. Tengo pensado usar un Registry (Eureka Server) , Load Balancer ( Ribbon ) , Gateway ( API GATEWAY), Circuit Braker ( Hystrix), Spring Boot con su Api Rest, Spring Config. Busco un freelancer para implementar este proyecto. Saludos Julio Cabrera

Un PCB (Circuito Impreso, por sus siglas en inglés Printed Circuit Board) para control de modulación de ancho de pulsos (PWM, por sus siglas en inglés Pulse Width Modulation) es una placa especialmente diseñada y fabricada para incorporar y soportar los componentes electrónicos necesarios para implementar la técnica de PWM. Esta técnica es ampliamente utilizada para controlar la cantidad de energía que se entrega a un dispositivo eléctrico alterando el ancho de los pulsos en una señal digital.

...Por tanto, un autónomo ideal tendría: * Experiencia en la creación de diagramas claros y comprensibles. * Capacidad para comprender y adaptarse a los diferentes requisitos del proyecto. * Capacidad para ofrecer resúmenes de alto nivel sin profundizar en detalles Esté preparado para proporcionar muestras de su trabajo anterior. Espero ver sus ofertas. Con idioma español I need an experienced diagram designer who specializes in creating flowcharts, UML diagrams and network diagrams. The diagrams will be used for several purposes including: * Visualizing processes * Designing systems * Mapping network structures Despite the range of uses, I am primarily interested in high-level overviews rather than detailed, technical specifications. ...

...App. 2.2 With the same functions of the website and integrated or synchronized with it. 2.3 B2C functions (freemium) active for everyone and B2B functions (premium) active only for the local country with the option to open it to other countries. What are we looking for? - Experienced iOS and Android developers (freelancers or companies). - Focus on working planned, preparing the Gantt diagram (or similar) of the project. - Guidance in UX, conversion design and neuromarketing. - Focus on submitting wireframes and sketches for approval prior to graphic design and web development. - Ability to work as a team and meet deadlines. - Excellent communication skills (verbal and written) in the Spanish language. If you speak English, communication will only be in writing. A...

...will ensure a positive experience across all functionalities. Availability and Downtime: The application will remain continuously available, minimizing any planned or unplanned downtime. Interoperability: The platform will be interoperable with other systems and technologies, facilitating integration. Regulatory Compliance: The system will comply with regulations and standards related to data protection and information security. Energy Efficiency: Energy efficiency will be considered in the system design, optimizing resource consumption. Adaptability to Mobile Devices: The web application and PDF report generation functionality will be adaptable to a variety of mobile devices and tablets. Maintainability and Updates: The platform will be easily maintainable and allow for pe...

What's up friends, The project is about configuring a Mikrotik with OpenVPN. SCENERY: Current Firewall: Endian Server (Remote Access): With ce...connect to headquarters 1 through L2L. WANTED: - Change the physical endian server for a Mikrotik with Firmware v13. (Already in possession and ready to configure.) This change job would be on my side. - Configure the OpenVPN service on the Mikrotik - Generate what is necessary to be able to connect through laptops that are outside the headquarters. Through this VPN. - Consider Firewall rules and protection in the configuration. - Consider that the firewall must allow Microsoft updates as well as other programs such as Eset antivirus, Windows and Office. The entire service would be through Anydesk remotely to my PC that has access ...

...solar panel to stable 5 volts, this supplies the wifi modem and other route goes to a LDO-3.3V. I don't want to use the module () anymore and embed it to the PCB as a fixed-5V circuit. So i Ask for: 1. Add a transistor circuit to supply 5V to the modem (from the lm2596 regulator) when the ESP32's GPIO commands. Add it to the current version of the schematic and PCB board layout. 2. Do the fixed-5V circuit, according to LM2596 datasheet, in the current schematic and PCB layout. Find the main components (1. transistor; 2. coil, diode, chip regulator) in LCSSC Electronics () so the footprints of the PCB match the solder pins of the packages. Add it to the current version of the

Cuento con un VPS el cual necesito que se actualice a AlmaLinux 8, asimismo, reforzar el tema de seguridad con la finalidad de minimizar los intentos de fuerza bruta registrados en los últimos días. Cabe destacar que, el complemento: cPHulk Brute Force Protection trabaja bien, sin embargo, a pesar de tener el 99% de los paises en la lista negra, se filtran intentos de fuerza bruta. Entonces, busco una persona con experiencia en Linux que pueda apoyarme con estas dos tareas.

Realizar las tareas en la imagen adjunta

I need to recreate this web* with this product**. * ** I have already a logo but it will be better to modify it a bit. Steps: 1- Logo modification 2- Logo in bottle battery product 3- Flyers and posters 4-Web design in shopify Please submit ONLY ONE POST WITH IMAGES EACH CONTESTANT . Thank you.

aplicación móvil para repartidores y colaboradores de entregas a domicilio. Para ingresar, optimizar y calcular la mejor ruta con las distintas paradas a realizar para entrega y recogida de mercancía o delivery. Similares a apps de Google Play como: Circuit y mapscope

Hola Muhammad B., observé tu perfil y me gustaría ofrecerte mi tarea. Es urgente y necesito terminarlo en menos de dos horas., 12 media noche de UTC -5 Es hacer un circuito en Multisim que representa un sensor de temperatura con tres fuentes de voltaje , varias resistencias, un ua741, lm35

Por favor, regístrate o inicia sesión para ver los detalles.

Hola!, Estamos buscando un monitor, que avise mediante bot o webhook de discord cada vez que la pagina suba un producto, El monitor tiene que saltarse el DDos protection y tiene que mandar la informacion parecido a la foto

Por favor, regístrate o inicia sesión para ver los detalles.

Create a logic diagram and a circuit using graffcet diagrams for a system that automatizes a bottling machine that realizes the following actions; 1) taking the bottle 2) washing 3)drying 4) sterilizing the bottle 5) filling up with liquids 6) closing the bottle 7) tagging the bottle 8) putting bottles on the shelf I attach a similar example Elabora el diagrama físico, lógico y circuito para un sistema que automatice una maquina embotelladora que realiza las siguientes acciones: tomar la botella, lavado, secado, esterilización del interior, llenado con líquidos, enroscado de tapa y puesta de etiqueta de la marca alrededor de la botella, y finalmente depositar la botella llena en una tarima. Cada quien puede elegir lo mecanismos (carrucel, ba...

FEATURES OF REMOTE TECHNICAL SUPPORT AND COST March 13, 2018 The characteristics can be: You can do it and get informed at any time (flexible hours). You can solve the problems. They can give you personalized dialogue. It explains st...support for employees, students and other are also a large number of technical support forums on the internet, which are totally free, and are based on the simple will and experience of the experts who want to help to beginners. Related Image COST Laptop .- $ 450 Operating system .- $ 450 General maintenance .- $ 450 Backup.- $ 150 Drivers .- $ 150 Printer maintenance .- $ 500 Charger repair. $ 250 Solder connectors.- $ 75 Install peripherals.- $ 50 Retrieve information .- $ 1,000 Configure network .- $ 100 Set up email .- $ 50 Antivirus.- $ 50

Te explico: • El equipo de Solution Sales nos mandó un archivo con los...que vienen marcados en verde. o Campaña 1: Go electric: ya existe: Global EV Fleet Campaign - 7015I000000YCqzQAG o Campaña 2: Logística y Transporte IoT Covid Campaign Spain - Logistics o Campaña 3: Slaud/Teleasistencia/Pharma IoT Covid Campaign Spain - Pharma o Campaña 4: VDMP  Campaña 4.1: AKO Frio y control de gases IoT Covid Campaign Spain - AKO  Campaña 4.2: Teleasistencia y Employee Protection (Oysta) IoT Covid Campaign Spain - Oysta  Campaña 4.3: Digital Signage IoT Covid Campaign Spain - Digital Signage  Campaña 4.4: Eficiencia Energética IoT Covid Campaign Spain – Energy Efficiency TIENEN QUE ESTAR TODAS L...

Hola Felipe V., vi en un mensaje que publicaste que sabes de asterisk y grandstream. Tengo un problema y no encuentro la forma de solucionarlo. Te dejo un link con mi problema, si consideras que puedes solucionarlo me gustaria que me contactes y me digas cuanto me cobrarias. Gracias

Tenemos un backend montado con Java 8 Spring boot, nginx encargado del balanceo de carga, circuit braker, proxy inverso y api gateway. tenemos que toda la logica de los eventos del broker van en un microservicio aparte pero estamos abiertos a cambio de lenguaje porque no es mucho el codigo hecho en ese microservicio (TODO MENOS PHP) y si es node, que sea con frameworks empresariales como nestjs (buscamos soluciones limpias y escalables. Necesitamos una solución arquitectonica para el manejo del protocolo mqtt, algo limpio, escalable y de larga mantenibilidad y que aporte buen rendimiento. Somos exigentes en temas de diseño de software, por eso estamos buscando apoyo profesional y con experiencia diseñando arquitecturas para este tipo de protocolo.

App for data collection Our target is iOS app A flutter developer has been working for 1 week (30 tasks, 45 good commits) Now we need get GPS location, and generate QR code on the app. We are going to have tasks for about 3 weeks I would like to have a flutter dev partner Input: - App Workflow diagram - Mockup - Design - Functional prototype. flutter codebase (30 tasks, 45 commits) (ask for github access) - KanBan of tasks Entregable: - Flutter development - in github repository - first tasks: 1. generate QR for each registry 2. get GPS location 3. replace recommendation list, by a carousel

Ingenieros Especialistas en Protección de Data Perfil: Ingeniero de Sistemas De 2 a 3 años de experiencia Inglés –requisito no limitativo- Requerimientos técnicos Productos que debe manejar: Data Domain or Networker or Avamar or RecoverPoint or PowerProtect Software

I need a system capable of detecting the leakage of gas, water and electricity that sends me real-time monitoring in an app created for smartphone. The project must have the following characterist...a gas leak. 2) The water leak detector must monitor the flow rate and by means of a flow sensor, there must also be a warning in the app to be created. 3) When detecting greater power consumption by measuring wattage with a sensor, the user must be alerted in the app. 4) This whole system must be through Arduino. 5) communication must be over wifi 6) I need the list of materials and connection diagram to carry it out in physical. 7) And finally I need the application that is capable of carrying the monitoring and leak alerts to the user in real time connected by Wi-Fi to the arduino (s) ...

I have two circuits that I need to check. Both circuits are designed in easyEDA Circuit 1: Check schematic if it is well designed Modify the pcb if necessary (although I don't think it's necessary) Generate bom file according to pcbway specifications The design contains esp32, gprs a6 ai-thinker, sd card, 4 relays, 1 multiplexer, and other small components, it is not a complicated design Circuit 2: Check schematic Generate PCB Generate BOM file compatible with pcbway specifications Design contains esp32, sd card, 2 wigand reader, 2 relay and along with other small components such as resistors and capacitors, it is not a complicated circuit --------------------------------------------------------------------------------------------------------------- tengo ...

Se necesita modelador, que hable español, que pueda desarrollo modelo 3D en Autodesk Inventor 2018, de equipo llamado "Charger", compuesto por una base refrigerada, y una torreta también refrigerada. (se adjunta fotos) El modelo debe hacerse, según nuestras indicaciones, y considerar algunas dar soluciones de diseño en aquellos componentes que no se logren medir por poca accesibilidad. Se cancelará el trabajo, cuando tengamos la aprobación interna y del cliente, pueden ser 30 a 40 días después de la entrega.

...Servicios Soluciones Partners Contacto Clientes Predictivo Omnicanalidad Diagram Studio IVR Reportes Bots Gamificación Big Data Speech Analytics Calidad

The extension of the odoo modules is foreseen: openeducat_core, openeducat_admission, openeducat_fees to adapt its functionality to the management circuit of an educational institute, allowing to improve the handling of inscriptions, collections and access of students to the institute, making the connection to a base external data sqlserver. Detalles ES: Destalles EN:

Necesito hacer una pagina web y una app. en ios y android para una red social en múltiples idiomas. Me agradaría que los dos (pag web y app) se asocien en un diseño con un universo de planetas que se mueven en el fondo. Para la página web sería interesante al...en un diseño con un universo de planetas que se mueven en el fondo. Para la página web sería interesante alguien que sepa de diseño digital. También para la app y si es posible para la pag. web, necesito comando de voz aparte de escritura y manejo digital. Doy preferencia a programadores y desarrolladores (developpers) latinos que hablen también inglés. Necesito tener incluido la "General Data Protection Regulation" GDPR para Europa....

...has to have the capability to store data base. Also, will send location of the employee to the employeer and time when the job starts so basically the employee have to sign in and and sign out. by doing so employeer will have a good control of the hours. For non show up or let the employer know. there will be a fee of usd 50 deducted from the employee account. In terms of agreement and protection there will be a mini-contract signed electronically by the employee where it is specified the job and work accepted including location. Payments will be discussed directly with the employer: What it needs to be delivered: Full App and code ready to be launch to the market. Features Should be able to send text messages to the different associates sending job offers, including l...

...businesses that will be developed separately, then we will try to put them together, but first the most profitable, I advance directly the second phase of the project: it would be to improve an investor Off grid (already working at home) would consist in taking the signals coming from an RJ9 output, monitoring via web server or app its most important data such as on / off voltage, current and battery. the second stage of this part of the development if everything goes well, would be the possibility of greater IOT control, with arduino or rasperry although that depending if it is worth it due to the costs and who has a know how to achieve it in a prudential time, please, the interested ones tell me what experience they have with these technologies and with which they recommend doi...

...como la inicial de la marca o algún dibujo. ---------------------------------------------------------------------------------- Well, I'm starting a business selling bamboo baby clothes and organic cotton ecofriendly (without being too extreme). I create a logo, but I need to improve it from the point of view of neuromarketing: A- Evoking an organic, natural sense, a feeling of well-being and protection for moms who see the brand. B- That at the same time generates a sense of exclusivity of being acquiring something of quality. C- That contribute to differentiate the brand from its competition. D- And of course I encourage you to buy the garment. The budget must contemplate: - An improved logo that includes the name of the brand - and an abbreviated version of the ...

...datos, por ejemplo ()) - Tiempo de retardo, para enviar datos Esta aplicación debe funcionar de acuerdo con el plan, quiero decir que al minimizar la aplicación, la aplicación debe seguir enviando la información URL de consulta para enviar datos ENVIAR ESTOS PARAMETROS CON (METHOD POST) - IMEI or imei - battery - longitude - latitude - altitude - orientation...

Español Esta aplicación debería poder escanear diferentes ...un objeto AR a un escenario VR (con movimiento 360, desde un punto, no hay traducción. Le enviaremos el escenario VR. • 1x objetivo con objeto 3D con animación. • 2 x objetivos de trampa English This application should be able to scan different targets and show their related virtual 3D object. We need that you program the App for the Android (Using our Vuforia account) system with the next pre-charger 3D objects with their targets: • 5x Targets with 3D virtual objects (we will provide them to you) • 1x Target with a translation from an AR object to VR scenario (with 360 movement, from one point, there is no translation. We will send you the VR scenario. • 1x T...

...los siguientes proveedores de software: Siemens WinCC, RSView32, Elipse, etc. Requisitos del puesto: • 1-4 años de experiencia laboral directa programando, probando y poniendo en servicio sistemas de control avanzado en una variedad de industrias (por ejemplo, procesamiento de alimentos e industrias de rendering). • Conocimientos fuertes en lenguajes de Programación de PLC (Ladder Diagram, Funtion Block Diagram, Instruction List, Structural Text, etc) • Debe ser lo suficientemente sólido para decidir los modelos de PLC / HMI según requerimiento del proyecto. • Debería poder hacer una lista de E / S (entradas y salidas) según el P & ID. • Debería poder escribir la lógica de programaci&oac...

...remota - Ejercicio de monitorización local 7. GESTIÓN DE MÓDULOS - Operaciones masivas - Importación de agentes - Librería de módulos 8. GESTIÓN REMOTA - Introducción - VNC - Anytermd 9. ALERTAS EN PANDORA FMS - Introducción al sistema de alertas general de Pandora FMS - Concepto y definición de alerta en Pandora FMS (componentes, parámetros, macros, FF Threshold, Cascade Protection...) - Visualización de alertas - Ejemplos de uso - Ejercicio de alertas 10. GESTIÓN DE EVENTOS - Introducción - Características del visor de eventos (funcionamiento, funcionalidades, configuración, validación, parámetros) - Correlaci&oac...

I have a project in Android Studio "Working", which runs in the background and I'm using the SERVICE class, but when I work in android version 6 and put it in my pocket, it goes to sleep and stops working, I want that; 1.- The instructions so that you can always keep sending the information even when it comes to rest. 2.- Verify that you march in such a way that you save the maximum of the battery 3.- Advisory for the publication The project is only to include that process and verify, so the cost is maximum 30 to 100 $. *********************** Tengo un proyecto en Android Studio "Trabajando", que se ejecuta en background y estoy utilizando la clase SERVICE, pero cuando ltrabaja en la vesion 6 de androidy lo coloco en mi bolsillo entra en reposo y...

...claro, sencillo y profesional. Adjuntamos nuestro logo actual. El logo debe contener el nombre de la web () y un máximo de dos colores. ---------------------------------------------------------------------------- We are an online store specializing in mosquito nets for bed. Although this is our star product, we are introducing other articles always oriented towards mosquito protection, natural and ecological. We have been working with a logo for years, but now we want to change it to a clearer, simpler and more professional one. We attach our current logo. The logo should contain the name of the web () and a maximum of two colors....

...tratamiento de imágenes ni optimización-corrección del texto. Build an online store with prestashop. Initially, the online store will include the following points: • Enter company data (logo, 3 sections of content). It will be the client who provides all the necessary documentation: images, logo, texts ... • Introduction of the following policies: 1. Privacy policy regarding the Data Protection Act 2. Terms of sale 3. Legal notice 4. Cookies Policy 5. Shipping and Returns • Language: Spanish and English. • Euro coin • Installing Google Analytics. • Installation of the following payment methods: PayPal, Bank transfer, POS, cash on delivery. • Shipping costs: flat rate or costs by weight ranges or total o...

Preciso una persona que haga una locuci...Shoppers) para realizar compras escenarios, e informar sobre todos los aspectos de su experiencia. El Shopper recibe un pago por cada evaluación, mas el reembolso de su compra. Así que , ¿qué esperas? Registrate en nuestra web: para unirte a nuestro equipo de Shoppers o envíanos un mail al correo que aparece en el video para mas información. Mystery Shopping By HsBrands. The brand protection company." Voz juvenil, buena pronunciación del inglés. El archivo se debe entregar en mp3 sin sonido de fondo. Se pueden solicitar arreglos o cambios de puntuación en la lectura una vez entregado el archivo mp3. Se va a solicitar una muestra de trabajos anteriores para evaluar...